Question

How did the Universe start? There are some theories called the Big bang theory. What does it mean?​

Answer 1

the Big Bang at around 13.8 billion years ago, which is thus considered the age of the universe. After its initial expansion, the universe cooled sufficiently to allow the formation of subatomic particles, and later simple atoms.

Answer 2

due to big bang the universe was created . according to the scientist the big bang theory means the whole universe was captured in small space due to gravity after billion of year the force inside the area increased and thus casuesd big bang this is how universe was formed

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